Framing, or “rough carpentry,” is the basic building skill of new construction and almost every remodeling addition project. Framing a wall, or anything else, in a house seems like a simple concept.  If you stand outside a house under construction it looks like the builders simply nailed together a bunch of 2x4s in a kind of grid pattern to make a skeleton for the building. There’s a lot more  to it and especially to do it right. But, to get it right it takes some precise measuring, measuring again and then cutting. Lumber is by far the most popular construction framing material because it’s readily available, easy to work with, and comparatively less expensive than other framing materials.